TESTBOY TV 350 Bedienungsanleitung Seite 22

Operating instructions
Wind speed measurement
When using the measuring instrument to measure the air flow volume you can actuate the
"UNIT" button to select the desired measurement unit (m/s, km/h, mil/h, ft/m, ft/s, Knots).
Setting the surface area
To measure the air flow volume you must first determine the surface area to be measured.
The procedure for setting the surface area:
①. Press the "FUNC" button to access the "AREA" view.
②. Use the "MAX/MIN" and "UNIT" buttons to adapt the value and unit after selecting the sur-
face area unit (m², ft²). Press "MAX/MIN" to confirm. A signal tone will sound once the surface ar-
ea has been entered and the settings are saved.
③. Please repeat step ② to change the surface area setting.
Air volume flow measurement
Position the converter (rotor) in the test environment. Use the "FUNC" button to set the measuring
instrument to air volume flow measurement , the symbol "FLOW" is shown in the display.
The measurement is performed with the rotor surface at right angles to the wind direction.
Please note:
If the converter (rotor) is not aligned to the wind direction, the measurement can provide incorrect
results.
With equal wind, the converter (rotor) best measures when it is aligned with the wind.
Selecting the unit for the air volume
When using the measuring instrument to measure the air flow volume you can actuate the
"UNIT" button to select the desired measurement unit (CMS, CMM, CFM).
Selecting the temperature unit
Hold the "UNIT" button depressed for 3 seconds in order to change the temperature unit (°C, °F).
Selecting the temperature mode
Hold the "HOLD/MODE" button for 3 seconds to change the temperature mode (ambient temper-
ature, dew point, wet-bulb temperature).
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22 Testboy TV 350